Compilare: main.cpp: In function 'void find_divisors()': main.cpp:67:19: warning: array subscript has type 'char' [-Wchar-subscripts] divs[j].push_back(i); ^ main.cpp: In function 'void find_dp()': main.cpp:105:14: warning: array subscript has type 'char' [-Wchar-subscripts] dp1[i] = dp0[i - 1] + 1; ^ main.cpp:107:14: warning: array subscript has type 'char' [-Wchar-subscripts] dp0[i] = 0; ^ main.cpp:109:29: warning: array subscript has type 'char' [-Wchar-subscripts] for (auto k : divs[i]) ^ main.cpp:113:18: warning: array subscript has type 'char' [-Wchar-subscripts] dp0[i] = max(dp0[i] , dp1[i / k]); ^ main.cpp:113:31: warning: array subscript has type 'char' [-Wchar-subscripts] dp0[i] = max(dp0[i] , dp1[i / k]); ^ main.cpp:91:8: warning: unused variable 'j' [-Wunused-variable] {int i,j; ^ main.cpp: In function 'void make_rmq()': main.cpp:157:14: warning: array subscript has type 'char' [-Wchar-subscripts] rmq[i][0] = {max(dp0[i] , dp1[i]) , 1}; ^ main.cpp:157:31: warning: array subscript has type 'char' [-Wchar-subscripts] rmq[i][0] = {max(dp0[i] , dp1[i]) , 1}; ^ main.cpp:157:40: warning: array subscript has type 'char' [-Wchar-subscripts] rmq[i][0] = {max(dp0[i] , dp1[i]) , 1}; ^ main.cpp:169:18: warning: array subscript has type 'char' [-Wchar-subscripts] rmq[i][scale] = join(rmq[i][scale - 1] , rmq[i + (1 << (scale - 1))][scale - 1]); ^ main.cpp:169:25: warning: array subscript has type 'char' [-Wchar-subscripts] rmq[i][scale] = join(rmq[i][scale - 1] , rmq[i + (1 << (scale - 1))][scale - 1]); ^ main.cpp:169:39: warning: array subscript has type 'char' [-Wchar-subscripts] rmq[i][scale] = join(rmq[i][scale - 1] , rmq[i + (1 << (scale - 1))][scale - 1]); ^ main.cpp: In function 'std::pair<char, char> query_rmq(char, char)': main.cpp:199:22: warning: array subscript has type 'char' [-Wchar-subscripts] return rmq[st][scale]; ^ main.cpp:199:29: warning: array subscript has type 'char' [-Wchar-subscripts] return rmq[st][scale]; ^ main.cpp:207:28: warning: array subscript has type 'char' [-Wchar-subscripts]